Higher borrowing costs are starting to reshape the U.S. housing landscape, extending how long households remain renters and creating new pressure points for multifamily capital stacks, according to Marcus & Millichap research. Following the Federal Reserve’s September rate increase, the 30-year fixed-rate mortgage reached 7.4% as of October 8, up from 6.3% a year earlier, based on Freddie Mac data.
Elevated mortgage rates are further eroding purchasing power and making the transition from renting to owning more difficult. Marcus & Millichap notes that current conditions are reinforcing the lock-in effect for homeowners holding lower-rate loans, effectively reducing mobility and keeping more households in place. This environment is particularly consequential for multifamily investors, as it alters both renter behavior and the availability of new housing supply.
For apartment owners and operators, the research brief indicates that stronger resident retention is supporting property performance, even as tighter financial conditions risk slowing hiring and household formation. One key data point: the share of renters renewing leases reached 57.6% in September, more than 5 percentage points above the 2015–2019 average, signaling longer rent tenure and potentially steadier occupancy.
At the same time, higher rates and existing cost pressures are weighing on the residential construction pipeline. Marcus & Millichap reports that the seasonally adjusted number of residential permits in August remained more than 25% below its early 2022 monthly peak, adding to evidence that both single-family and multifamily development could decelerate. Builders already contending with elevated labor and materials expenses now face costlier financing, even as they deploy incentives such as mortgage rate buy-downs, closing-cost assistance and price reductions to preserve affordability for buyers.
For multifamily investors, debt is emerging as a central concern. Higher interest rates are reducing acquisition leverage and limiting refinancing proceeds, widening the gap between what sellers expect and what buyers can justify paying. Borrowers with loans maturing over the next year may need to contribute fresh equity or consider selling when they refinance, as proceeds may no longer fully cover existing balances under current rate conditions.
Despite these headwinds, operating fundamentals are providing a partial offset. Marcus & Millichap highlights slowing construction activity, decreasing use of concessions and a ninth consecutive month of effective rent growth in August, all of which point to strengthening property-level cash flow. The firm suggests that consistent income performance could help narrow the buyer-seller divide by bolstering confidence in future cash flows, potentially supporting better pricing alignment and increased transaction activity over time.
While higher rates are clearly challenging single-family affordability and suppressing for-sale housing mobility, they are also prolonging the renter lifecycle. For multifamily stakeholders, this combination of firmer operating performance and more constrained financing underscores a shifting balance between income stability and capital markets risk across the apartment sector.
